Methyl iodide → 7-[1-(Pyridin-4-yl)piperidin-4-ylmethoxy]-1,2,3,4-tetrahydroisoquinoline-2-carbothioimidic acid methyl ester

Participants

Reaction Conditions

Reaction Steps

7-[1-(Pyridin-4-yl)piperidin-4-ylmethoxy]-1,2,3,4-tetrahydroisoquinoline-2-carbothioamide (200 mg) was treated with hydrogen chloride—ethanol solution. To a suspension of the obtained residue in methanol (6 ml) was added methyl iodide (0.1 ml), and the mixture was stirred at 60° C. for 2 hours. After completion of the reaction, the solvent was evaporated and the obtained residue was dissolved in water and ethanol and neutralized with ion-exchange resin (IRA-410). This was filtrated and the filtrate was concentrated and dried under reduced pressure to give the title compound (200 mg).

Provenance & Evidence